MKT.8:4.6 - Revise from actual use without rewriting the past

After a selected change, obtain evidence of the altered arrangement and the receiving result at appropriate times. Compare it with the intended continuation. Keep the earlier history and the new observation distinguishable; a revised plan does not change what the earlier customer encountered.

Update only the reach affected by new evidence, a different customer situation or changed provider ability. State what the map can now support and what remains outside. Retire a view that no longer serves a decision rather than maintaining every contact indefinitely.